feat: dagstore: add dagstore register-shard command

[LexLuthr]

Related Issues

[]
#8644

Proposed Changes

$ lotus-miner dagstore register-shard --help
NAME:
lotus-miner dagstore register-shard - Register a shard

USAGE:
lotus-miner dagstore register-shard [command options] [key]

OPTIONS:
--color use color in display output (default: depends on output being a TTY)
--help, -h show help (default: false)

Additional Info

Relates issue filecoin-project/boost#509

Checklist

Before you mark the PR ready for review, please make sure that:

• All commits have a clear commit message.
• The PR title is in the form of of <PR type>: <area>: <change being made>
  • example: fix: mempool: Introduce a cache for valid signatures
  • PR type: fix, feat, INTERFACE BREAKING CHANGE, CONSENSUS BREAKING, build, chore, ci, docs,perf, refactor, revert, style, test
  • area: api, chain, state, vm, data transfer, market, mempool, message, block production, multisig, networking, paychan, proving, sealing, wallet, deps
• This PR has tests for new functionality or change in behaviour
• If new user-facing features are introduced, clear usage guidelines and / or documentation updates should be included in https://lotus.filecoin.io or Discussion Tutorials.
• CI is green

[codecov]

Codecov Report

Merging #8645 (8f71927) into master (33a05d3) will decrease coverage by 0.13%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #8645      +/-   ##
==========================================
- Coverage   40.94%   40.81%   -0.14%     
==========================================
  Files         686      686              
  Lines       75750    75781      +31     
==========================================
- Hits        31017    30929      -88     
- Misses      39394    39513     +119     
  Partials     5339     5339              

Impacted Files	Coverage Δ
api/api_storage.go	0.00% <ø> (ø)
cmd/lotus-miner/dagstore.go	19.58% <0.00%> (-2.47%)	⬇️
node/impl/storminer.go	23.78% <0.00%> (-0.56%)	⬇️
itests/kit/blockminer.go	70.65% <0.00%> (-19.03%)	⬇️
chain/actors/builtin/miner/diff.go	48.52% <0.00%> (-10.30%)	⬇️
cli/util.go	70.83% <0.00%> (-8.34%)	⬇️
extern/sector-storage/worker_tracked.go	80.50% <0.00%> (-6.78%)	⬇️
miner/miner.go	56.72% <0.00%> (-3.94%)	⬇️
storage/wdpost_sched.go	81.37% <0.00%> (-3.93%)	⬇️
node/hello/hello.go	63.63% <0.00%> (-3.41%)	⬇️
... and 17 more